China's Space Program Thread II

[sunnymaxi]

With the launch of

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, China has achieved a notable milestone with a total of 20 taikonauts who have ventured into the universe on manned space missions...

 

[antiterror13]

Also the 6 month duration is a big milestone too

 

[Arij Javaid]

I heard about China making a breakthrough in 6G satellite communication where light can simply mirror to other locations and that it will not require converting into signals. Can anyone tell me when it will be put to practice? And what can we expect with this breakthrough??

 

[nativechicken]

Yes and no. CZ-10 is previously called CZ-5DY within CASC before the type was approved for development. Actually all current CZ rockets CZ-5, CZ-6, CZ-7 and CZ-8 were CZ-5XXX in early studies, but got different numbers later on. CZ-5 was envisioned to be a family. From the perspective of technical root, all are CZ-5 variants, from administrative perspective, they are different rockets.

I would like to add that there were two options for early CZ5 project approval. A all kerosene takeoff configuration (two and a half) B hydrogen oxygen engine first stage rocket+kerosene assisted rocket first stage and a half configuration.

It is said that two reasons have delayed the development of the all kerosene takeoff level (i.e. CZ5DY).

The CZ5 with a 4 boost all kerosene takeoff has too much capacity. Initially, the LEO was in the 40t class (4 boost version), and there is no supporting load development plan, so it may not be used for a while.

2. YF-77 can be used as the upper stage of future heavy-duty rockets, developed in advance to reduce the number of engines developed for future heavy-duty vehicles, while avoiding the degradation of research and development capabilities related to hydrogen and oxygen engines due to the lack of background projects.

So, the current CZ10 is actually a continuation of the CZ5's all kerosene takeoff stage rocket.

 

[SanWenYu]

I heard about China making a breakthrough in 6G satellite communication where light can simply mirror to other locations and that it will not require converting into signals. Can anyone tell me when it will be put to practice? And what can we expect with this breakthrough??

You mean this? It has nothing to do with the 6G mobile RF standards although it can be used as backbones of 6G networks.

 

[by78]

Some faces behind the development of the YF-135 engine (for Long March 9). The team has received a labor award from the Shaanxi Federation of Trade Unions. In the background, the screen reads "congratulations on the successful completion of partial system test run of a certain high-thrust liquid rocket motor".

 

[taxiya]

Some faces behind the development of the YF-135 engine (for Long March 9). The team has received a labor award from the Shaanxi Federation of Trade Unions. In the background, the screen reads "congratulations on the successful completion of partial system test run of a certain high-thrust liquid rocket motor".

I think the Chinese character blocked by this guy is 首 (First). So this is the first half system test.

 

[by78]

Jing Haipeng (景海鹏) has become the second Chinese taikonaut to have accumulated 200 days in space.

 

[luosifen]

Official handover ceremony, Shenzhou-16 crew to return Oct. 31:

 

[by78]

Yutu-2 lunar rover looking back at the Chang'e-4 lander.